Aug 15 17:58:00 mail postfix/postqueue[16666]: fatal: Queue report unavailable - mail system is downAfter, i try the option: chown -R postfix:postfix /opt/zimbra/data/postfix/spool ( is a my "queue_directory " in main.cf), and has the same error.Have NO iptables, SELinux or another mail server running on this server....